public static void Main(string[] args)
        {
            StairMaster fonda        = new StairMaster();
            long        combinations = fonda.getCombinations(29);

            Console.WriteLine("total possible combinations is " + combinations);
        }
 public static void Main(string[] args)
 {
     StairMaster fonda = new StairMaster ();
     long combinations = fonda.getCombinations(29);
     Console.WriteLine("total possible combinations is " + combinations);
 }